[Texmacs-dev] Line shoving can crash caret motion

[david]

On Fri, Feb 07, 2003 at 06:50:08PM +0100, Joris van der Hoeven wrote:
> > The following file crashes TeXmacs 1.0.1, at least on this
> > machine. Deleting any part of this file (the displayed
> > formula, either paragraph, or the initialization material
> > at the end) results in a file that does not crash.
> > 
> > On loading the file, it is correctly displayed, but moving
> > the cursor around in the file quickly produces a
> > segmentation fault. For example if you place the cursor
> > at the end of the file and move up four lines, the crash
> > occurs when you reach the the end of the first paragraph.
> 
> Thanks for isolating this very annoying bug.
> I will take a look at it as soon as I will have time.
> Here is an even shorter version:

Actually that is another instance of a bug I have isolated nearly one
year ago (Nix. N. Nix submitted the original bug report).

I have experimentated a bit again, and I think I have determined the
most general conditions where that problem can happen.

Actually it is amazing that a bug which can happen under such general
conditions stayed unidentified for so long!

All details can be found on Savannah:

  https://savannah.gnu.org/bugs/?func=detailbug&bug_id=2506&group_id=156


-- 
David Allouche         | GNU TeXmacs -- Writing is a pleasure
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TeXmacs is NOT a LaTeX front-end and is unrelated to emacs.